Sleeve repair safety testing device

Abstract

The utility model relates to the technical field of pipeline repair testing, in particular to a sleeve repair safety testing device. According to the technical scheme, a to-be-repaired steel pipe is included, a sleeve assembly is installed outside the to-be-repaired steel pipe and comprises an upper sleeve and a lower sleeve, rubber sealing belts are arranged between the two ends of the sleeve assembly and the to-be-repaired steel pipe, and a binding belt is connected between the sleeve assembly and the to-be-repaired steel pipe; one end of the to-be-repaired steel pipe is connected with an air compressor, and the other end of the to-be-repaired steel pipe is connected with a pressure and temperature monitor. The device has the characteristics of simplicity in operation, easiness in maintenance and the like, can adapt to various complicated test environments, can improve the efficiency and quality of repair and repair of pipelines, reduces the possibility of accidents, and has important significance for guaranteeing the life and property safety of people and promoting economic development.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline repair testing, in particular to a sleeve repair safety testing device. Background Art

[0002] Pipelines are a critical mode of transportation for oil and gas resources, and their reliability is a crucial guarantee for their supply. Pipelines are massive, and due to inherent defects such as increased service life, corrosion, third-party damage, and a decline in the mechanical properties of the pipeline material, they can become partially weakened or even leak. This can lead to safety incidents, economic losses, and poor oil and gas supply. Therefore, the development and application of pipeline emergency maintenance and repair technologies and equipment are crucial. Sleeves can play an important role in pipeline repair. In some cases, cracks, damage, or corrosion may occur in pipelines, necessitating repair. Sleeve repair is a commonly used pipeline repair method. Safety after sleeve repair is a key concern.

[0003] If the repaired sleeve is defective or lacks strength, it may cause the pipeline to leak or rupture again, resulting in serious consequences. Therefore, it is very important to test the safety of the repaired sleeve. With so many different pipeline repair technologies, post-repair performance evaluation and safety and reliability assessment are crucial for the normal and safe operation of the pipeline. As a typical rapid pipeline repair technology, steel epoxy sleeves require a complete testing solution, including a safety testing device and test process. Summary of the invention

[0004] The purpose of the utility model is to address the problems existing in the background technology and to propose a sleeve repair safety testing device.

[0005] The technical solution of the utility model is as follows: a sleeve repair safety test device, comprising a steel pipe to be repaired, a sleeve assembly is installed on the outside of the steel pipe to be repaired, the sleeve assembly comprises an upper sleeve and a lower sleeve, rubber sealing belts are provided between the two ends of the sleeve assembly and the steel pipe to be repaired, and a cable tie is connected between the sleeve assembly and the steel pipe to be repaired;

[0006] One end of the steel pipe to be repaired is connected to an air compressor, and the other end of the steel pipe to be repaired is connected to a pressure and temperature monitor.

[0007] Optionally, the air compressor and the steel pipe to be repaired are connected via a delivery pipeline, and a valve 1 is provided between the delivery pipeline;

[0008] A second valve is provided on the conveying pipeline connecting the pressure and temperature monitor and the steel pipe to be repaired.

[0009] Optionally, two sets of the rubber sealing belts are provided, which are respectively arranged at both ends of the sleeve assembly, and a buckle is arranged on each set of the cable ties for sealing and locking.

[0010] Optionally, bolts for assembling the upper sleeve and the lower sleeve are arranged between the upper sleeve and the lower sleeve.

[0011] Optionally, a gas discharge hole is provided on the upper sleeve, and a glue injection hole is provided on the lower sleeve.

[0012] Optionally, anti-corrosion layers are coated on the outer surfaces of the upper sleeve and the lower sleeve.

[0013] Optionally, epoxy resin is filled between the sleeve assembly and the steel pipe to be repaired.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] The utility model can comprehensively and accurately test the pipeline after sleeve repair, timely discover and eliminate potential defects and hidden dangers, and ensure the safety and reliability of the sleeve;

[0016] The utility model has the characteristics of simple operation and easy maintenance, can adapt to various complex test environments, can improve the efficiency and quality of pipeline maintenance and emergency repair, reduce the possibility of accidents, and is of great significance for ensuring people's life and property safety and promoting economic development. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the test device proposed by the utility model is given;

[0018] Figure 2 For Figure 1 the top view schematic diagram;

[0019] Figure 3 A front view schematic diagram of the cross-section at A-A is given.

[0020] Reference numerals: 1, air compressor; 2, valve I; 3, steel pipe to be repaired; 4, cable tie; 5, rubber sealing belt; 6, sleeve assembly; 6-1, upper sleeve; 6-2, lower sleeve; 7, bolt; 8, gas discharge hole; 9, valve II; 10, pressure and temperature monitor; 11, glue injection hole; 12, buckle; 13, anti-corrosion layer; 14, epoxy resin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions of the present disclosure will be clearly and completely described below with reference to the drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure.

[0022] The components of the embodiments of the present disclosure, which are usually depicted and shown in the accompanying drawings here, can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed present disclosure, but merely represents selected embodiments of the present disclosure.

[0023] Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0024] In the description of the present disclosure, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present disclosure.

[0025] In the description of the present disclosure, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0026] Embodiment

[0027] As Figures 1-3 shown, the sleeve repair safety testing device proposed by the present utility model includes a steel pipe 3 to be repaired. A sleeve assembly 6 is installed outside the steel pipe 3 to be repaired, and the sleeve assembly 6 is a thin-walled cylinder; the sleeve assembly 6 includes an upper sleeve 6-1 and a lower sleeve 6-2, and a bolt 7 for assembling the two is provided between the upper sleeve 6-1 and the lower sleeve 6-2; a gas release hole 8 is provided on the upper sleeve 6-1, and a glue injection hole 11 is provided on the lower sleeve 6-2; anticorrosion layers 13 are coated on the outer surfaces of both the upper sleeve 6-1 and the lower sleeve 6-2;

[0028] Rubber sealing bands 5 are provided between the two ends of the sleeve assembly 6 and the steel pipe 3 to be repaired. There are two groups of rubber sealing bands 5, which are respectively provided at both ends of the sleeve assembly 6. A buckle 12 is provided on each group of tie straps 4 for sealing and locking them;

[0029] Tie straps 4 are connected between the sleeve assembly 6 and the steel pipe 3 to be repaired; epoxy resin 14 is filled between the sleeve assembly 6 and the steel pipe 3 to be repaired;

[0030] One end of the steel pipe 3 to be repaired is connected to an air compressor 1. The air compressor 1 and the steel pipe 3 to be repaired are connected through a conveying pipeline, and a first valve 2 is arranged between the conveying pipelines.

[0031] The other end of the steel pipe 3 to be repaired is connected to a pressure and temperature monitor 10. A second valve 9 is arranged on the conveying pipeline connecting the pressure and temperature monitor 10 and the steel pipe 3 to be repaired.

[0032] Specifically, the testing device proposed in this embodiment locks the upper sleeve 6-1 and the lower sleeve 6-2 through bolts 7, and injects epoxy resin 14 between the steel pipe 3 to be repaired and the sleeve assembly 6.

[0033] During the test, gas is injected into the steel pipe 3 to be repaired through the air compressor 1. The sleeve assembly 6 and the steel pipe 3 to be repaired are locked and sealed through the settings of cable ties 4 and rubber sealing tapes 5. The pressure data of the injected gas is displayed through the pressure and temperature monitor 10.

[0034] In this embodiment, the testing device selects a single-phase double-value capacitor asynchronous motor, a pressure detection sensor, a temperature sensor, a gas concentration detection sensor, and protective equipment such as safety helmets, safety glasses, and industrial gloves.

[0035] The safety tests include pressure tests, leakage tests, and anticorrosive coating inspections.

[0036] Pressure test: Inject liquid or gas into the steel pipe 3 to be repaired and gradually increase the pressure until the design pressure is reached to check whether the pipeline can withstand the design pressure; monitor whether the overall reinforcement structure can deform synergistically with the pipeline and whether it can transmit the mechanical stress at the defect point extremely well, so that the steel pipe 3 to be repaired, the epoxy resin 14, and the sleeve assembly 6 are perfectly integrated.

[0037] Leakage test: Seal both ends of the sleeve assembly 6 with a rubber sealing tape 5. Inject epoxy resin 14 into the gap between the sleeve assembly 6 and the steel pipe 3 to be repaired. Inject the gas actually flowing through the steel pipe 3 to be repaired into the steel pipe 3 to be repaired and observe the gas concentration probe to check whether there is leakage in the steel pipe 3 to be repaired.

[0038] Anticorrosive coating 13 inspection: Apply the prepared solvent-free liquid epoxy resin coating on the sleeve and the steel pipe with the anticorrosive coating peeled off twice. The second coat can be applied after the first coat is surface dry. The total thickness shall not be less than 800μm. After the coating is completed, 3PE anticorrosion is carried out. During the process, special thickening treatment is carried out on the bolt parts to prevent leakage points from occurring; after the coating is dry, the sleeve assembly 6 and the anticorrosive coatings on the pipelines on both sides of the sleeve assembly 6 are subjected to spark testing with a voltage of 5000V. If leakage points are found, they shall be repaired in time, and the leakage points shall be detected again after the repaired area is dry until the anticorrosive coating completely passes the spark testing.

[0039] The above specific embodiments are merely several alternative embodiments of the present utility model. Based on the technical solution of the present utility model and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. Sleeve repair safety testing device, including the steel pipe (3) to be repaired, characterized in that: A sleeve assembly (6) is installed outside the steel pipe (3) to be repaired. The sleeve assembly (6) includes an upper sleeve (6-1) and a lower sleeve (6-2). Rubber sealing tapes (5) are provided between both ends of the sleeve assembly (6) and the steel pipe (3) to be repaired. A cable tie (4) is connected between the sleeve assembly (6) and the steel pipe (3) to be repaired. One end of the steel pipe (3) to be repaired is connected to an air compressor (1), and the other end of the steel pipe (3) to be repaired is connected to a pressure and temperature monitor (10).

2. The sleeve repair safety testing device according to claim 1, characterized in that, The air compressor (1) is connected to the steel pipe (3) to be repaired through a delivery pipeline, and a valve I (2) is provided between the delivery pipelines. A valve II (9) is provided on the delivery pipeline connecting the pressure and temperature monitor (10) and the steel pipe (3) to be repaired.

3. The sleeve repair safety testing device according to claim 1, characterized in that, Two groups of the rubber sealing tapes (5) are provided, respectively arranged at both ends of the sleeve assembly (6). A buckle (12) is provided on each group of the cable ties (4) for sealing and locking.

4. The sleeve repair safety testing device according to claim 1, characterized in that, A bolt (7) for assembling the upper sleeve (6-1) and the lower sleeve (6-2) is provided between the upper sleeve (6-1) and the lower sleeve (6-2).

5. The sleeve repair safety testing device according to claim 1, characterized in that, A bleed hole (8) is provided on the upper sleeve (6-1), and a glue injection hole (11) is provided on the lower sleeve (6-2).

6. The sleeve repair safety testing device according to claim 1, characterized in that, Anticorrosion layers (13) are coated on the outer surfaces of the upper sleeve (6-1) and the lower sleeve (6-2).

7. The sleeve repair safety testing device according to claim 1, characterized in that, Epoxy resin (14) is filled between the sleeve assembly (6) and the steel pipe (3) to be repaired.

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